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diff --git a/doc/database/db_post.md b/doc/database/db_post.md
index 020e5e9c9f..303269b1c6 100644
--- a/doc/database/db_post.md
+++ b/doc/database/db_post.md
@@ -1,26 +1,58 @@
 Table post
 ===========
+
 Structure for all posts
 
-| Field | Description | Type | Null | Key | Default | Extra |
-| ----- | ----------- | ---- | ---- | --- | ------- | ----- |
-| uri-id | Id of the item-uri table entry that contains the item uri | int unsigned | YES | PRI | NULL |  |    
-| parent-uri-id | Id of the item-uri table that contains the parent uri | int unsigned | NO |  | NULL |  |    
-| thr-parent-id | Id of the item-uri table that contains the thread parent uri | int unsigned | NO |  | NULL |  |    
-| external-id | Id of the item-uri table entry that contains the external uri | int unsigned | NO |  | NULL |  |    
-| created | Creation timestamp. | datetime | YES |  | 0001-01-01 00:00:00 |  |    
-| edited | Date of last edit (default is created) | datetime | YES |  | 0001-01-01 00:00:00 |  |    
-| received | datetime | datetime | YES |  | 0001-01-01 00:00:00 |  |    
-| gravity |  | tinyint unsigned | YES |  | 0 |  |    
-| network | Network from where the item comes from | char(4) | YES |  |  |  |    
-| owner-id | Link to the contact table with uid=0 of the owner of this item | int unsigned | YES |  | 0 |  |    
-| author-id | Link to the contact table with uid=0 of the author of this item | int unsigned | YES |  | 0 |  |    
-| causer-id | Link to the contact table with uid=0 of the contact that caused the item creation | int unsigned | NO |  | NULL |  |    
-| post-type | Post type (personal note, image, article, ...) | tinyint unsigned | YES |  | 0 |  |    
-| vid | Id of the verb table entry that contains the activity verbs | smallint unsigned | NO |  | NULL |  |    
-| private | 0=public, 1=private, 2=unlisted | tinyint unsigned | YES |  | 0 |  |    
-| global |  | boolean | YES |  | 0 |  |    
-| visible |  | boolean | YES |  | 0 |  |    
-| deleted | item has been marked for deletion | boolean | YES |  | 0 |  |    
+Fields
+------
+
+| Field         | Description                                                                       | Type              | Null | Key | Default             | Extra |
+| ------------- | --------------------------------------------------------------------------------- | ----------------- | ---- | --- | ------------------- | ----- |
+| uri-id        | Id of the item-uri table entry that contains the item uri                         | int unsigned      | NO   | PRI | NULL                |       |
+| parent-uri-id | Id of the item-uri table that contains the parent uri                             | int unsigned      | YES  |     | NULL                |       |
+| thr-parent-id | Id of the item-uri table that contains the thread parent uri                      | int unsigned      | YES  |     | NULL                |       |
+| external-id   | Id of the item-uri table entry that contains the external uri                     | int unsigned      | YES  |     | NULL                |       |
+| created       | Creation timestamp.                                                               | datetime          | NO   |     | 0001-01-01 00:00:00 |       |
+| edited        | Date of last edit (default is created)                                            | datetime          | NO   |     | 0001-01-01 00:00:00 |       |
+| received      | datetime                                                                          | datetime          | NO   |     | 0001-01-01 00:00:00 |       |
+| gravity       |                                                                                   | tinyint unsigned  | NO   |     | 0                   |       |
+| network       | Network from where the item comes from                                            | char(4)           | NO   |     |                     |       |
+| owner-id      | Link to the contact table with uid=0 of the owner of this item                    | int unsigned      | NO   |     | 0                   |       |
+| author-id     | Link to the contact table with uid=0 of the author of this item                   | int unsigned      | NO   |     | 0                   |       |
+| causer-id     | Link to the contact table with uid=0 of the contact that caused the item creation | int unsigned      | YES  |     | NULL                |       |
+| post-type     | Post type (personal note, image, article, ...)                                    | tinyint unsigned  | NO   |     | 0                   |       |
+| vid           | Id of the verb table entry that contains the activity verbs                       | smallint unsigned | YES  |     | NULL                |       |
+| private       | 0=public, 1=private, 2=unlisted                                                   | tinyint unsigned  | NO   |     | 0                   |       |
+| global        |                                                                                   | boolean           | NO   |     | 0                   |       |
+| visible       |                                                                                   | boolean           | NO   |     | 0                   |       |
+| deleted       | item has been marked for deletion                                                 | boolean           | NO   |     | 0                   |       |
+
+Indexes
+------------
+
+| Name          | Fields        |
+| ------------- | ------------- |
+| PRIMARY       | uri-id        |
+| parent-uri-id | parent-uri-id |
+| thr-parent-id | thr-parent-id |
+| external-id   | external-id   |
+| owner-id      | owner-id      |
+| author-id     | author-id     |
+| causer-id     | causer-id     |
+| vid           | vid           |
+
+Foreign Keys
+------------
+
+| Field | Target Table | Target Field |
+|-------|--------------|--------------|
+| uri-id | [item-uri](help/database/db_item-uri) | id |
+| parent-uri-id | [item-uri](help/database/db_item-uri) | id |
+| thr-parent-id | [item-uri](help/database/db_item-uri) | id |
+| external-id | [item-uri](help/database/db_item-uri) | id |
+| owner-id | [contact](help/database/db_contact) | id |
+| author-id | [contact](help/database/db_contact) | id |
+| causer-id | [contact](help/database/db_contact) | id |
+| vid | [verb](help/database/db_verb) | id |
 
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